"""simple docstring"""



from __future__ import annotations

SCREAMING_SNAKE_CASE__:int									=			1.6_021e-19  # units = C



def 	_lowerCamelCase(	a   ,    a   ,    a   ,    ):
       if (conductivity, electron_conc, mobility).count(0				) != 1:
              raise ValueError("You cannot supply more or less than 2 values"				)
       elif conductivity < 0:
              raise ValueError("Conductivity cannot be negative"				)
       elif electron_conc < 0:
              raise ValueError("Electron concentration cannot be negative"				)
       elif mobility < 0:
              raise ValueError("mobility cannot be negative"				)
       elif conductivity == 0:
              return (
                  "conductivity",
                  mobility * electron_conc * ELECTRON_CHARGE,
              )
       elif electron_conc == 0:
              return (
                  "electron_conc",
                  conductivity / (mobility * ELECTRON_CHARGE),
              )
       else:
              return (
                  "mobility",
                  conductivity / (electron_conc * ELECTRON_CHARGE),
              )


if __name__ == "__main__":
   import doctest

   doctest.testmod()

"""simple docstring"""



import os



def 	_lowerCamelCase(	a = "matrix.txt"				):
       with open(os.path.join(os.path.dirname(a				)   ,    a				)				) as in_file:
              __a       =    in_file.read()

       __a       =    [[int(a				) for cell in row.split(","				)] for row in data.strip().splitlines()]
       __a       =    [[0 for cell in row] for row in grid]
       __a       =    len(grid[0]				)

       __a       =    [[0 for i in range(a				)] for j in range(a				)]
       __a       =    grid[0][0]
       for i in range(1   ,    a				):
              __a       =    grid[0][i] + dp[0][i - 1]
       for i in range(1   ,    a				):
              __a       =    grid[i][0] + dp[i - 1][0]

       for i in range(1   ,    a				):
              for j in range(1   ,    a				):
                     __a       =    grid[i][j] + min(dp[i - 1][j]   ,    dp[i][j - 1]				)

       return dp[-1][-1]


if __name__ == "__main__":
   print(F'''{solution() = }''')
